CS&A Designer

We'll inspire and empower you to deliver your best work so you can evolve, grow and succeed today and into tomorrow.  We offer an exciting range of opportunities to develop your career within a supportive and diverse team who always strive to do the right thing for our people, clients and communities.    

People are our greatest asset, and we offer a competitive package to retain and attract the best talent.

In addition to the benefits you'd expect, UK employees also receive free single medical cover and digital GP service, family-friendly benefits such as enhanced parental leave pay and free membership of employee assistance and parental programmes, plus reimbursement towards relevant professional development and memberships. We also give back to our communities through our Collectively program which incorporates matched-funding, paid volunteering time and charitable donations.    

Work-life balance and flexibility is a key focus area for us. We're happy to discuss hybrid, part-time and flexible working hours, patterns and locations to suit you and our business.

The Opportunity  

Amentum is the Design and Engineering partner for Sellafield under the PPP (Programme and Project Partners). This is a 20-year arrangement to deliver ~£7bn of major projects. We are looking to recruit high value expertise from across regulated and comparable sectors to work in a collaborative environment. PPP is delivering major projects, site wide improvements and provision of supporting services. 

The Project  

The SIXEP Continuity Plant (SCP), being delivered by the Programme and Project Partners (PPP) at Sellafield, will ensure the site's existing Site Ion Exchange Effluent Plant (SIXEP) facility can continue its vital work for decades to come.  

The newbuild SCP facility will play a vital part in Sellafield's purpose to create a clean and safe environment for future generations. Once operational SCP will ensure the nuclear site will have continued availability to treat and make safe the effluent created by risk reduction activities.

The Role 

Due to continuing work SCP are now looking to recruit a Senior Structural Designer to join the team in Birchwood. 

As a CS&A Designer your responsibilities will include: 

• Develop innovative design solutions for complex nuclear projects, ensuring high standards and adherence to industry best practices.
• Detailing, draughting and modelling of structural steelwork and concrete including Concrete GA drawings and Concrete RC detailing 
• Work with multi-disciplinary teams to create integrated design solutions, promoting effective cooperation across all functions. Deliver work in collaboration with site-based construction teams. 
• Assist and mentor CS&A Apprentices and other Technicians, fostering their technical and professional growth. 
• Apply and support BIM principles and processes, ensuring compliance with relevant standards. 

As a CS&A Designer, you will already have: 

• HNC minimum in a relevant discipline or equivalent academic qualification.
• At least ten years' relevant experience across the full lifecycle of design activities.
• Proficiency in CAD tools and BIM processes, especially Autodesk Revit (essential)
• Membership in a relevant institute or significant demonstrable experience.

Our Culture

Our values stand on a foundation of safety, integrity, inclusion and diversity. We put people at the heart of our business, and we genuinely believe that we all succeed by supporting one another through our culture of caring. We value positive mental health and a sense of belonging for all employees. 

We aim to embed inclusion in everything we do. We know that if we are inclusive, we're more connected, and we're more creative. We accept people for who they are, regardless of age, disability, gender identity, gender expression, marital status, mental health, race, faith or belief, sexual orientation, socioeconomic background, and whether you're pregnant or on family leave. This is reflected in our wide range of Global Employee Networks.

We partner with VERCIDA to help us attract and retain diverse talent. For greater online accessibility, please visit to view and access our roles. As a Disability Confident employer, we will interview all disabled applicants who meet the minimum criteria for a vacancy. We welcome applications from candidates who are seeking flexible working and from those who may not meet all the listed requirements for a role.

If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team.

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed,  marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.